From: Quantifying the reduction of respiratory motion by mechanical ventilation with MRI for radiotherapy
Median (range) values | MRI1 | MRI2 | N | p-value |
---|---|---|---|---|
Testing differences between MRI sessions | ||||
DIBH IQR (mm) | 5.4 (1.2–14.9) | 4.0 (1.0–23.6) | 14 | 0.221 |
FB amplitude (mm) | 20.2 (10.6–31.9) | 22.1 (12.8–41.9) | 14 | 0.362 |
RB amplitude (mm) | 11.3 (6.2–20.3) | 16.6 (9.3–23.8) | 14 | 0.024 |
PIBH drift (mm/minute) | 3.0 (0.4–6.5) | 2.7 ( 0.9–6.0) | 15 | 0.125 |
PEBH drift (mm/minute) | 4.9 (2.2–7.9) | 3.8 (1.8–15.1) | 14 | 0.064 |
Median (range) values | FB | RB | N | p-value |
---|---|---|---|---|
Testing differences between breathing control strategies | ||||
MRI1 amplitude (mm) | 20.2 (10.6–31.9) | 11.3 (6.2–20.3) | 14 | < 0.001 |
MRI2 amplitude (mm) | 22.1 (12.8–41.9) | 16.6 (9.3–23.8) | 14 | 0.002 |
MRI1 & MRI2 amplitude (mm) | 20.9 (10.6–41.9) | 12.8 (6.2–23.8) | 28 | < 0.001 |
Median (range) values | PIBH | PEBH | N | p-value |
---|---|---|---|---|
Testing differences between breathing control strategies | ||||
MRI1 drift (mm/minute) | 3.0 (0.4–6.5) | 4.9 (2.2–7.9) | 14 | 0.002 |
MRI2 drift (mm/minute) | 2.7 ( 0.9–6.0) | 3.8 (1.8–15.1) | 15 | 0.001 |
MRI1 & MRI2 drift (mm/minute) | 3.0 (0.4–6.5) | 4.4 (1.8–15.1) | 29 | < 0.001 |